DESCRIPTION

· The RT8481A is a secondary-side CC/CV controller for SPS applications.

· It integrates a Constant Current (CC) regulating amplifier, a Constant Voltage (CV) regulating amplifier, and 2 precision reference voltages.

· The CC regulating amplifier ensures low-side current sense performance and high sensing accuracy.

· The CV regulating amplifier is biased with a 2.5V reference voltage.

· The RT8481A is available in the SOT-23-6 package.

FEATURES

· Secondary-Side Constant Voltage (CV) and Constant Current (CC) Control.

· 4.75V to 50V Operation Voltage Range.

· ±1% Output Voltage Accuracy at Full Temperature Range.

· 0.6mA Quiescent Current.

· Smooth Transition Between CC and CV Control Loops.

· -5V Negative Voltage Tolerance at CP pin.

APPLICATIONS

· Battery Chargers.

· AC/DC Adaptors.

· LED Drivers.